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The Speed 400 brings Triumph’s unmistakeable stripped back custom style, agile handling, responsive performance and category-defining build quality to a new class of rider.

2024 Triumph Speed 400 - Style and DNA


From the classic engine profile and sculpted fuel tank to the premium paint finish, the Speed 400's stripped back modern custom style and timeless silhouette is unmistakably Triumph.

2024 Triumph Speed 400 - Premium Finish


Trademark black powder-coated engine casings, tough gold anodised forks, high-quality paint and exquisite detailing ensure the finish on the Speed 400 is premium throughout.


The all-new TR-Series engine combines the latest technology with modern classic aesthetics to deliver class-beating performance, Triumph's signature characterful and rewarding feel and unmistakable exhaust note.


The all-new roadster frame and high-quality suspension deliver neutral, confidence-inspiring handling and the perfect riding position for a fun and engaging ride for new and experienced riders alike.

2024 Triumph Speed 400 - Rider Ergonomics


The Speed 400 is a great fit for riders of all sizes. Thanks to its slender waistline, the engaging and natural riding position blends comfort with assured, feet-down manoeuvring.

2024 Triumph Speed 400 - Wheels and Tyres


Lightweight, 10-spoke, 17-inch cast aluminium wheels contribute to the Speed 400's agile handling and premium brand tyres provide confidence in all conditions.

2024 Triumph Speed 400 - Brakes


Responsive and confident braking performance comes courtesy of twin-piston radial caliper and floating disc, complete with braided brake lines and Bosch ABS.

2024 Triumph Speed 400 - Technology


The Speed 400 is packed with modern rider-focused technology to enhance every ride, including switchable traction control, torque-assist clutch, Bosch ABS, LED lighting and all-new dual format instruments.

2024 Triumph Speed 400 - Security


The Speed 400 is equipped with a steering lock and anti-theft immobiliser as standard. A unique security chip is integrated into the ignition key to ensure only the owner can start the engine.

2024 Triumph Speed 400 - Value


With class-leading specification, quality and performance with low running costs, a 10,000-mile service interval and a two-year unlimited mileage warranty - the Speed 400 represents incredible value.

Type Liquid-cooled, 4 valve, DOHC, single-cylinder
Capacity 398.15 cc
Bore 89.0 mm
Stroke 64.0 mm
Compression 12.0:1
Max Power EC 40 PS / 39.5 bhp (29.4 kW) @ 8,000 rpm
Max Torque EC 37.5 Nm @ 6,500 rpm
System Bosch electronic fuel injection with electronic throttle control
Exhaust Stainless twin-skin header system with stainless steel silencer
Final Drive X-ring chain
Clutch Wet, multi-plate, slip
Gearbox 6-speed



Frame Hybrid spine/perimeter, tubular steel, bolt-on rear subframe
Swingarm Twin-sided, cast aluminium alloy
Front Wheel Cast aluminium alloy 10 spoke, 17 x 3 in
Rear Wheel Cast aluminium alloy 10 spoke, 17 x 4 in
Front Tyre 110/70 R17
Rear Tyre 150/60 R17
Front Suspension 43mm upside down Big Piston forks. 140mm wheel travel
Rear Suspension Gas monoshock RSU with external reservoir and pre-load adjustment. 130mm wheel travel
Front Brakes 300mm fixed disc, four-piston radial caliper, ABS
Rear Brakes 230mm fixed disc, floating caliper, ABS
Instrument Display and Functions Analogue speedometer with integrated multi-function LCD screen



Width Handlebars 814 mm
Height Without Mirror 1084 mm
Seat Height 790 mm
Wheelbase 1377 mm
Rake 24.6 °
Trail 102 mm
Tank Capacity 13 L
Wet Weight 170 kg



CO2 Figures 83.8 g/km EURO 5 CO2 emissions and fuel consumption data are measured according to regulation 168/2013/EC. Figures for fuel consumption are derived from specific test conditions and are for comparative purposes only. They may not reflect real driving results.



Service Interval 10,000 miles (16,000km)/12 months (whichever comes first)